The San Francisco Internet video service will have two channels streaming a mix of live feeds from the concert stages and video on demand programming, said spokeswoman Joellen Ferrer.

“The VOD will mostly be during down times after the concert, so that the streams never go down,” she said.

The stream page integrates Facebook and Twitter, so fans can watch and chat socially at the same time.

Not every act is on there. Ustream has confirmed clearance to broadcast performances by more than 30 artists, although more are expected to be added during the weekend, she said. So far, Ustream has confirmed headliners like Nine Inch Nails and Red Hot Chili Peppers.

The streamcasts will start at 2 p.m. Friday with Smith Westerns and Roy Vance.

We also have a story in Friday’s paper on technology being employed at this year’s Outside Lands festival. That includes the Insider Band, a near field communications wristband sponsored by Esurance that lets users check in on Facebook, share photos, message friends and remember the names of the tasty beers they drank, all without using their mobile phones.